Add a blurb on what GNOME is
It's worth adding a small blurb defining what GNOME is. In fact, no where on our website eg gnome.org do we define what GNOME is. There is no 'About GNOME'. So if you're welcoming people - it would be good to add either a section here or in a separate page otherwise people who are not familiar with us will have to figure it out from context which sure they can but adding formal language will help put our version of what GNOME is, not whatever they came up with. :-)
I can help with this. I am not quite familiar with how contributions work with pages - incidentally, this generated page doesn't quite look right - https://teams.pages.gitlab.gnome.org/Websites/welcome.gnome.org/team/websites/.